The human body / by Sir Arthur Keith.

  • Keith, Arthur, Sir, 1866-1955.
Date:
Between 1910 and 1919?
Catalogue details

Licence: In copyright

Credit: The human body / by Sir Arthur Keith. Source: Wellcome Collection.

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    head is indicated when a finger is placed on the left temple, about an inch behind the upper margin of the orbit. The inferior frontal convolution is situated on the anterior margin of the deepest depression or fissure of the human brain—the Sylvian fissure, named after Sylvius, who taught anatomy in Paris during the seventeenth century. It was Broca, working in Paris in the latter half of the nineteenth century, who discovered that the inferior frontal convolution of the left side was connected with speech. The deep fissure of Sylvius, as we have seen, passes backwards and upwards on the side of the cerebral hemi- sphere; below it is the temporal lobe of the brain in the upper part of which the centre for hearing is situated (Fig. 1). There is a con- nexion or pathway between the hearing and speech centres, for if we are deaf we must necessarily be dumb ; the child listens as it imitates its mother’s voice. The chief features of the human nervous system having been thus demonstrated to us, we take our leave of the students and of the anatomical theatre, but before making our exit from the medical school we may turn aside for a minute to examine some specimens in its museum. In an out-of-the-way corner we come across the cast of a cleanly shaven head, mapped out into sixty little plots, accord- ing to the instructions of Dr. Gall, who foimded the study of phrenology at the beginning of